A COMPARISON OF DIFFERENT METHODS TO DETERMINE THE THRESHOLD OF FATIGUE-CRACK PROPAGATION

被引：21

作者：

PIPPAN, R

STUWE, HP

GOLOS, K

机构：

[1] WARSAW UNIV TECHNOL,WARSAW,POLAND

[2] MONTAN UNIV,INST MET PHYS,A-8700 LEOBEN,AUSTRIA

来源：

INTERNATIONAL JOURNAL OF FATIGUE | 1994年 / 16卷 / 08期

关键词：

FATIGUE; THRESHOLD; ALUMINUM ALLOY; POTENTIAL DROP TECHNIQUE; STRESS RATIO; FATIGUE CRACK PROPAGATION;

D O I：

10.1016/0142-1123(94)90484-7

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

Three different methods for determining the threshold value for fatigue crack growth - the load-shedding technique, the stepwise increase of load amplitude on specimens precracked in cyclic compression, and decrease of stress intensity range at a constant maximum stress intensity - were applied to a high-strength aluminium alloy. The load-shedding technique tended to lead to higher values of the threshold, especially at low R-ratios. The threshold determined with decreasing stress intensity range at a constant maximum stress intensity was larger than the effective threshold determined with stepwise increasing of load amplitude on specimens precracked in cyclic compression.

引用

页码：579 / 582

页数：4

共 26 条

[1]

BAILON JP, 1981, P FATIGUE THRESHOLDS, P75

[2]

Bucci R.J., 1981, ASTM STP, P5

[3]

CADMAN AJ, 1982, P FATIGUE THRESHOLDS, P59

[4] CRACK INITIATION UNDER FAR-FIELD CYCLIC COMPRESSION AND THE STUDY OF SHORT FATIGUE CRACKS [J].